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Signatures of adaptation in human invasive Salmonella Typhimurium ST313 populations from Sub-Saharan Africa

Okoro, Chinyere K., Barquist, Lars, Connor, Thomas Richard, Harris, Simon R., Clare, Simon, Stevens, Mark P., Arends, Mark J., Hale, Christine, Kane, Leanne, Pickard, Derek J., Hill, Jennifer, Harcourt, Katherine, Parkhill, Julian, Dougan, Gordon and Kingsley, Robert A. 2015. Signatures of adaptation in human invasive Salmonella Typhimurium ST313 populations from Sub-Saharan Africa. PLOS Neglected Tropical Diseases 9 (3) , e0003611. 10.1371/journal.pntd.0003611

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Abstract

Two lineages of Salmonella enterica serovar Typhimurium (S. Typhimurium) of multi-locus sequence type ST313 have been linked with the emergence of invasive Salmonella disease across sub-Saharan Africa. The expansion of these lineages has a temporal association with the HIV pandemic and antibiotic usage. We analysed the whole genome sequence of 129 ST313 isolates representative of the two lineages and found evidence of lineage-specific genome degradation, with some similarities to that observed in S. Typhi. Individual ST313 S. Typhimurium isolates exhibit a distinct metabolic signature and modified enteropathogenesis in both a murine and cattle model of colitis, compared to S. Typhimurium outside of the ST313 lineages. These data define phenotypes that distinguish ST313 isolates from other S. Typhimurium and may represent adaptation to a distinct pathogenesis and lifestyle linked to an-immuno-compromised human population.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Biosciences
Systems Immunity Research Institute (SIURI)
Subjects: Q Science > QR Microbiology
Publisher: Public Library of Science
ISSN: 1935-2735
Date of First Compliant Deposit: 30 March 2016
Date of Acceptance: 10 February 2015
Last Modified: 04 Jun 2017 08:10
URI: http://orca-mwe.cf.ac.uk/id/eprint/73656

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